Kaj is broadly interested in the evolution of phenotypic variation. As a postdoctoral fellow in the Langerhans Lab his research will focus on understanding to what extent environmental variation drives predictable patterns of covariation among the diverse trait types (behaviour, morphology, physiology) that make up the whole-organism (phenotypic integration). His research also aims to shed light on the degree to which trait correlation networks correspond between the phenotypic and genetic level and how multiple traits play out to generate integrated defence responses against predation-risk.

Mark entered the Biomathematics Ph.D. program in August 2015 and joined the lab in January 2016. He is a dual-major Ph.D. student in the Biomathematics program and Ecology & Evolution program. He is interested in predatory-prey (co)evolutionary dynamics, evolution of genetic correlations among traits, incorporating evolutionary processes into ecological range models, and the role of human activities in driving speciation processes.

Justa Heinen-Kay, Lab Alumnus
Ph.D. North Carolina State University, 2016
B.S. University of St. Thomas, 2008

Justa joined the lab in fall 2010 and graduated in May 2016. She is interested in sexual selection, rapid evolution, measuring selection in the field, genital evolution, and ecology-evolution feedbacks. She is currently a postdoctoral researcher at the University of Minnesota.

Elizabeth graduated in May 2015, being the first Ph.D. student to graduate from the lab. Dissertation title: "Rapid Evolution of Fish Morphology, Performance, and Behavior." She is interested in the causes of rapid (contemporary) evolutionary changes in phenotypes, especially the effects of human activities on wild organisms. She is currently a postdoctoral researcher at Ewha Womans University in Seoul, South Korea.

Chris graduated from the lab with his Master's Degree in May 2014. Thesis title: "Elucidating Drivers of Genital Evolution and their Consequences for Speciation." He is interested in the interactions of natural and sexual selection (particularly postmating sexual selection), evolution of complex traits, evolution of sexual traits (especially genitalia), and causes of speciation. He is currently a PhD student in Jeff McKinnon's lab at East Carolina University.

Ryan was a postdoctoral researcher from Sept. 2010 - Sept. 2012. He moved on to a postdoc at NIMBioS, and is now an Asst. Prof. at Case Western Reserve University. Ryan is interested in understanding how ecological processes promote the evolution of diversity, both within and between species. In the lab, he investigated several lines of research centering around how variation in ecological interactions and environmental conditions promote evolutionary divergence between fish populations (Gambusia sp.). His work involved sexual signal evolution, dietary divergence and diet specialization, speciation, and life-history, behavioral, and morphological evolution.

Rudy Riesch, Lab Alumnus
Ph.D. University of Oklahoma, 2010

Rudy was a postdoctoral researcher from Aug. 2010 - Oct. 2012. He moved on to a postdoc at the University of Sheffield working with Patrik Nosil, and is now a Lecturer at Royal Holloway, University of London. Rudy is interested in the evolutionary processes driving the formation of new species (speciation), especially the role of divergent natural selection in the speciation process, as well as the predictability of adaptive phenotypic evolution. In the lab, he examined life-history evolution in Bahamas mosquitofish and livebearing fish that have colonized toxic waters, integrated evolution of multiple character suites, approaches to speciation research, and extreme foraging behaviors.

Erik Archer, Lab Alumnus
B.S. Utah State University, 2003

Erik served as lab manager from November 2013 - January 2015. He's held the reins for live-fish care and experimentation, and kept the lab running smoothly.

Jennifer served as the lab's intrepid lab manager from Feb 2012 - Oct 2013. She valiently kept the lab running smoothly during her tenure, handing the lab's large database, processing 1000's of specimens into the database, conducting molecular work on mosquitofish and sleepers, and training and overseeing undergraduate researchers.

Aimee Langerhans, Lab Alumnus
B.S. Texas A&M University, 2001

Aimee was the designated digitizer for morphometric work on several projects, and helped build the lab's large database. Although Aimee is a meteorologist, she also realizes that Gambusia can be just as cool as tornados.

Corwin Hess, Lab Alumnus
B.S. NC State University, 2010

Corwin served as the lab's second lab manager from Jan 2011 - Jan 2012, and kept the lab running smoothly, processing 1000's of specimens into the lab's database.

Kathleen Quigley, Lab Alumnus
B.S. Monmouth College, 2009

Kathleen served valiantly as the lab's first lab mananger from Sept. 2009 - Dec 2010, setting the foundation for the well-oiled machine it is today. She is currently pursuing her PhD at Wake Forest University, studying plant-animal interactions in the Serengeti.